In my custom enclosure, the filament feeds from above, but a bit forward of the z axis.  I needed to move the filament sensor off of the spool holder so remixed LW design's work to fit my use case.  

The remix moves the sensor toward the LED bar to avoid tight turns in the filament.  This pushes the sensor toward the LED bar, but still leaves a gap to it.  

Printed at 0.2mm layer height using PLA.  M3 screw and bolt used to secure the sensor.  Elongated mounting hole to support different placements.